HDS-TEK T6 LED Flashlights 1600 Lumens Torch Flashlight Adjustable Focus Zoom Light Lamp (Black) Sturdy and durable: aluminium alloy body, skid-proof and water resistant design 5 switch modes: high / medium / low / strobe / SOS. In SOS mode it repeatedly flashes S-O-S in its brightest to signal help. Impressive zooming features: quite bright even further zoom all out, great for a tactical application Fits in your palm easily: suitable for hunting, cycling, climbing, camping and outdoor activity etc. Battery Configuration: 1x 18650 3.6v/3.7v OR 3X AAA battery (Battery not included)